Calculate total number of valence electrons in \( 2.8 \mathrm{~g} \mathrm{of}^{-3} \) ion. A. \(...

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Calculate total number of valence electrons in \( 2.8 \mathrm{~g} \mathrm{of}^{-3} \) ion.
A. \( 2.6 \mathrm{NA} \)
B. \( 1.6 \mathrm{NA} \)
C. \( 7.8 \mathrm{NA} \)
D. \( 0.8 \mathrm{NA} \)
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